Journal
CHEMICAL PHYSICS LETTERS
Volume 352, Issue 5-6, Pages 469-478Publisher
ELSEVIER
DOI: 10.1016/S0009-2614(01)01478-6
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Approximate density functional theory (DFT) covers long-range non-dynamic electron correlation via the exchange functional while the correlation functional includes just the short-range dynamic electron correlation effects. We show that the self-interaction error of approximate exchange functionals (local density approximation. LDA and others) mimics the long-range correlation effects. For this purpose the exchange hole is investigated at the Hartree-Fock. the LDA, and the self-interaction corrected (SIC)-LDA levels of theory, (C) 2002 Elsevier Science B.V. All rights reserved.
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